A gearbox and vehicle

Abstract

The application discloses a gearbox and a vehicle, the gearbox comprising a housing, an oil collecting box, a partition assembly and a baffle, wherein the housing has a containing cavity, the oil collecting box is fixed in the containing cavity, the oil collecting box is provided with a cavity, a first oil outlet, a second oil outlet and an opening, the partition assembly separates the cavity partially to form a first cavity and a second cavity, the first cavity and the second cavity are communicated through a connecting port, the first oil outlet is used for lubricating an intermediate shaft, the second oil outlet is used for lubricating an input shaft, the baffle has a first state of opening the connecting port and a second state of closing the connecting port, when the rotating speed of the differential mechanism is greater than or equal to a preset value, the baffle is in the second state of closing the connecting port, the risk of oil entering the breather plug during high-speed rotation is reduced, and the reliability of the gearbox is improved. When the rotating speed of the differential mechanism is less than the preset value, the baffle is in the first state of opening the connecting port, and the risk of oil accumulation is reduced.

Description

Technical Field

[0001] This application relates to the field of transmission technology, and more specifically, to a transmission and a vehicle. Background Technology

[0002] As a key component that transmits power to gears, the transmission must withstand both high speeds and high torques, thus requiring lubricating oil to lubricate the gears inside. Due to the size of the transmission housing, most transmissions use splash lubrication. When the gears rotate at high speeds, lubricating oil is inevitably splashed onto the vent, causing oil to accumulate in the vent plug or even leak out.

[0003] However, during high-speed rotation, most of the oil inside the transmission accumulates in the upper part of the transmission, which can easily cause oil to enter the breather plug in the upper part of the transmission, resulting in oil leakage from the breather plug. On the other hand, during rapid acceleration or deceleration, oil accumulates, affecting the lubrication effect. Summary of the Invention

[0004] The purpose of this application is to provide a transmission and a vehicle to solve the problem of oil entering the breather plug and the breather plug leaking oil.

[0005] To solve the above problems, this application adopts the following technical solution:

[0006] This application provides a gearbox, including:

[0007] A housing having a receiving cavity for accommodating a differential, an intermediate shaft, and at least a portion of an input shaft;

[0008] An oil collection box is fixed inside the receiving cavity. The oil collection box has a cavity, a first oil outlet, a second oil outlet, and an opening. The opening, the first oil outlet, and the second oil outlet are all connected to the cavity.

[0009] A partition assembly is located within the cavity, which partially divides the cavity to form a first cavity and a second cavity. The first cavity and the second cavity are connected by a connection port. The first oil outlet is located at the bottom of the first cavity, and the second oil outlet is located at the bottom of the second cavity. The first oil outlet is used for lubricating the intermediate shaft, and the second oil outlet is used for lubricating the input shaft.

[0010] A baffle is located inside the cavity, and the baffle has a first state of opening the connection port and a second state of closing the connection port;

[0011] When the speed of the differential is greater than or equal to a preset value, the baffle is in a second state where the connection port is closed; when the speed of the differential is less than the preset value, the baffle is in a first state where the connection port is open.

[0012] Furthermore, the baffle includes:

[0013] A pin is fixedly connected to the housing.

[0014] A sleeve having a through hole, through which the pin passes;

[0015] A baffle plate, fixedly connected to the sleeve, is used to open or close the connection port; and

[0016] An elastic element connects the baffle and the pin. The elastic element is provided with a preload to keep the baffle in the open connection port.

[0017] Furthermore, the first oil outlet is lower than the second oil outlet; and / or,

[0018] The first oil outlet is located between the second oil outlet and the opening of the oil collection box.

[0019] Furthermore, the partition assembly is rotatably connected to the housing, and the partition assembly has a third state in which the cavity is separated and a fourth state in which the cavity is connected.

[0020] Furthermore, the barrier assembly includes:

[0021] The rotating shaft is fixedly connected to the housing; and

[0022] The partition has a through hole, through which the rotating shaft passes, and the partition and the rotating shaft are rotatably connected.

[0023] Furthermore, the partition has a stop portion, and the oil collection box has a blocking portion, which is used to limit the rotation angle of the partition.

[0024] Furthermore, the partition assembly also includes a counterweight block, which is fixed to the partition plate so that the counterweight block and the partition plate are in the third state of separating the cavity under their own weight.

[0025] Furthermore, the partition is bent.

[0026] Furthermore, the gearbox also includes a vent pipe, which is connected to the second cavity.

[0027] This application also provides a vehicle, including:

[0028] The aforementioned gearbox; and

[0029] A lubrication system for lubricating the gearbox.

[0030] The transmission and vehicle of this application embodiment include a housing, an oil collection box, a baffle assembly, and a baffle plate. The housing has a receiving cavity, and the oil collection box is fixed within the receiving cavity. The oil collection box has a cavity, a first oil outlet, a second oil outlet, and an opening. The baffle assembly divides the cavity portion to form a first chamber and a second chamber, which are connected by a connection port. The first oil outlet is used for lubricating the intermediate shaft, and the second oil outlet is used for lubricating the input shaft. The baffle plate has a first state with the connection port open and a second state with the connection port closed. When the differential speed is greater than or equal to a preset value, the baffle plate is in the second state with the connection port closed, reducing the risk of oil entering the breather plug during high-speed rotation and improving the reliability of the transmission. When the differential speed is less than the preset value, the baffle plate is in the first state with the connection port open, reducing the risk of oil accumulation during rapid acceleration or deceleration. Attached Figure Description

[0031] Figure 1 This application provides a schematic diagram of the structure of a gearbox according to an embodiment of the present application;

[0032] Figure 2 for Figure 1 A schematic diagram of the gearbox structure from another perspective;

[0033] Figure 3 An exploded view of a barrier assembly provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of another gearbox structure provided in an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the structure of a baffle provided in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Housing; 11. Receiving cavity; 12. Stopping part; 2. Oil collection box; 21. Cavity; 211. First cavity; 212. Second cavity; 213. Connection port; 22. First oil outlet; 23. Second oil outlet; 24. Opening; 3. Partition assembly; 31. Rotating shaft; 32. Partition plate; 321. Through hole; 322. Stopping part; 33. Counterweight block; 4. Baffle plate; 41. Pin shaft; 42. Sleeve; 421. Through hole; 43. Baffle plate; 5. Vent pipe; 44. Elastic element; P. Differential; Q. Intermediate shaft; R. Input shaft. Detailed Implementation

[0038] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0039] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0040] It should be understood that the orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings. These orientation terms are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0041] In the description of this application, the terms "first / second" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0042] Transmissions typically contain a large amount of lubricating oil to lubricate and cool gears and bearings as they rotate. This oil usually accumulates in the lower part of the transmission. When the gears rotate, they churn the oil, and the resistance of the oil itself affects the transmission efficiency—a phenomenon often referred to as churning loss. Generally, less lubricating oil results in less churning loss during gear rotation. However, insufficient lubricating oil can lead to poor lubrication of gears and bearings, causing malfunctions.

[0043] Existing technologies typically include a plastic oil collection box at the top of the transmission to collect the oil agitated during differential rotation. This collection box, with an oil outlet at its lower part, provides targeted semi-active lubrication for bearings and gears. Furthermore, collecting the oil at the top reduces oil loss from churning in the gears below. However, with the increasing speed of transmissions, especially hybrid transmissions and reduction gearboxes, the impact of differential oil churning can significantly strain the oil collection box, affecting its lifespan. On the other hand, during high-speed operation, most of the oil inside the transmission accumulates at the top. Since the breather plug is also located at the top, oil can easily enter the breather plug labyrinth, leading to leaks. Existing oil collection boxes do not consider rapid acceleration and deceleration conditions; during these events, oil can accumulate in certain areas, resulting in poor lubrication.

[0044] In view of this, such as Figure 1 and Figure 2As shown, this application embodiment provides a gearbox, including a housing 1, an oil collection box 2, a gear shifting assembly 3 and a baffle 4. The housing 1 has a receiving cavity 11 for accommodating a differential P, an intermediate shaft Q and at least a portion of the input shaft R. The oil collection box 2 is fixed inside the receiving cavity 11 and has a cavity 21, a first oil outlet 22, a second oil outlet 23 and an opening 24. Opening 24, first oil outlet 22, and second oil outlet 23 are all connected to cavity 21. The partition assembly 3 is located inside cavity 21 and partially divides cavity 21 to form first cavity 211 and second cavity 212. First cavity 211 and second cavity 212 are connected through connection port 213. First oil outlet 22 is located at the bottom of first cavity 211, and second oil outlet 23 is located at the bottom of second cavity 212. First oil outlet 22 is used to lubricate intermediate shaft Q, and second oil outlet 23 is used to lubricate input shaft R. Baffle 4 is located inside cavity 21 and has a first state of opening connection port 213 and a second state of closing connection port 213. When the speed of differential P is greater than or equal to a preset value, baffle 4 is in the second state of closing connection port 213. When the speed of differential P is less than the preset value, baffle 4 is in the first state of opening connection port 213.

[0045] Specifically, the housing 1's receiving cavity 11 houses the differential P, the intermediate shaft Q, and at least part of the input shaft R. For example, the intermediate shaft Q is located between the input shaft R and the differential P, and they are connected by gear meshing to transmit speed and torque. An oil collection box 2 is fixed inside the receiving cavity 11. For example, the oil collection box 2 is formed by bending sheet metal and is fixed between the left and right halves of the housing 1. The width of the oil collection box 2 is the same as the distance between the inner walls of the two sides of the receiving cavity 11. When the input shaft R rotates, the gear meshing causes the differential P to rotate, agitating the lubricating oil and driving it to enter through the opening of the cavity 21. The lubricating oil entering the cavity 21 flows out through the first oil outlet 22 and the second oil outlet 23 to lubricate the corresponding shafts and gears. For example, the first oil outlet 22 is located at the bottom of the first cavity 211 and above the intermediate shaft Q, lubricating the intermediate shaft Q through the first oil outlet 22. The second oil outlet 23 is located at the bottom of the second cavity 212 and above the input shaft R, providing lubrication to the input shaft R. The partition assembly 3 is fixed within the cavity 21, partially dividing the cavity 21 to form a first cavity 211 and a second cavity 212. The first cavity 211 and the second cavity 212 are connected via a connection port 213. For example, the partition assembly 3 may be located at the lower part of the cavity 21, sealing the lower part of the cavity 21. The upper part of the partition assembly 3 is a certain distance from the inner wall of the top surface of the cavity 21, forming a connection port 213. The partition assembly 3 divides the cavity 21 into the first cavity 211 and the second cavity 212, which are connected via the connection port 213. A baffle 4 is fixed within the cavity 21, having a first state with the connection port 213 open and a second state with the connection port 213 closed. When the speed of differential P is greater than or equal to a preset value, the fluid splashes onto baffle 4 as differential P agitates, causing baffle 4 to be in the second state of closing connection port 213. When the speed of differential P is less than the preset value, baffle 4 is subjected to a preset preload force, and baffle 4 is in the first state of opening connection port 213.

[0046] Since the baffle 4 has a first state of opening the connection port 213 and a second state of closing the connection port 213, the opening and closing of the connection port 213 can be controlled by the baffle 4 under different speed conditions of the differential P, thereby meeting the lubrication requirements of the differential P under different speed conditions and improving lubrication efficiency.

[0047] In particular, such as Figure 4As shown, the transmission also includes a vent pipe 5, which is connected to the second cavity 212. When the speed of the differential P is greater than or equal to a preset value, the baffle 4 is in the second state of closing the connection port 213, reducing the risk of oil entering the vent pipe 5 during high-speed rotation and improving the reliability of the transmission. When the speed of the differential P is less than the preset value, the baffle 4 is in the first state of opening the connection port 213, reducing the risk of oil accumulation during rapid acceleration or deceleration.

[0048] It should be noted that integrating the oil collection box 2 onto the housing 1 reduces costs and increases the strength of the oil collection box 2. At the same time, by setting baffles 4 in the corresponding areas, the risk of oil leakage from the vent pipe 5 at high speeds is reduced. Furthermore, during rapid acceleration and deceleration, the baffle assembly 3 reduces the risk of oil accumulation, improves lubrication efficiency, and reduces the risk of poor lubrication.

[0049] In one embodiment, such as Figure 5 As shown, the baffle 4 includes a pin 41, a sleeve 42, a baffle plate 43, and an elastic element 44. The pin 41 is fixedly connected to the housing 1. The sleeve 42 has a through hole 421 through which the pin 41 passes. The baffle plate 43 is fixedly connected to the sleeve 42 and is used to open or close the connection port 213. The elastic element 44 connects the baffle plate 43 and the pin 41 and is provided with a preload to keep the baffle plate 43 in the open connection port.

[0050] Specifically, the pin 41 is fixedly connected to the housing 1, and the baffle 43 is fixedly connected to the sleeve 42. The pin 41 passes through the through hole 421 of the sleeve 42, allowing the baffle 43 and the sleeve 42 to rotate around the pin 41. For example, the elastic element 44 is a compression spring, torsion spring, or leaf spring. The baffle 43 and the pin 41 are connected by the elastic element 44. The elastic element 44 has a preload, so that the baffle 43 is in the initial state of opening the connection port 213. When the speed of the differential P is greater than or equal to the preset value, the differential P agitates and splashes to the baffle 4. The baffle 4 is impacted by the splashed lubricating oil to counteract the preload of the elastic element 44, causing the baffle 4 to change from the first state of opening the connection port to the second state of closing the connection port 213.

[0051] In one embodiment, such as Figure 4As shown, the first oil outlet 22 is lower than the second oil outlet 23. Because the first oil outlet 22 is lower than the second oil outlet 23, and the lubricating oil first enters the first cavity 211 through the opening 24, the first cavity 211 stores the lubricating oil first. When the amount of lubricating oil stored in the first cavity 211 exceeds a certain level, the lubricating oil flows from the first cavity 211 into the second cavity 212. Specifically, the first oil outlet 22 is located between the second oil outlet 23 and the opening 24 of the oil collection box 2. When the speed of the differential P is less than a preset value, the lubricating oil enters the first cavity 211 through the opening 24 and slowly falls from the first oil outlet 22, lubricating the intermediate shaft Q. As the intermediate shaft Q rotates, it further lubricates the input shaft R. It should be noted that when the speed of the differential P is less than the preset value, the input shaft R is indirectly lubricated through the first oil outlet 22 and the intermediate shaft Q, which can meet the lubrication requirements of the transmission. When the vehicle decelerates rapidly, the oil in the first chamber 211 will accumulate to the left due to the acceleration. The oil will push open the baffle assembly 3, allowing the oil to flow from the first chamber 211 into the second chamber 212. The lubricating oil in the second chamber 212 will flow out from the second oil outlet 23, thereby directly lubricating the input shaft R.

[0052] In one embodiment, such as Figure 2 and Figure 3 As shown, the partition assembly 3 is rotatably connected to the housing 1. The partition assembly 3 has a third state in which the cavity 21 is separated and a fourth state in which the cavity 21 is connected. Specifically, the partition assembly 3 is located inside the cavity 21, and one end of the partition assembly 3 abuts against the bottom surface of the housing 1, so that the partition assembly 3 can only be opened rotatably from one side. For example, as... Figure 4 As shown, the partition assembly 3 abuts against the bottom surface of the housing 1 from the left side, and the partition assembly 3 can only rotate clockwise around the rotation point.

[0053] When the vehicle decelerates rapidly, the oil in the first chamber 211 will accumulate to the left due to the acceleration. The oil will push open the baffle assembly 3, allowing the oil to flow from the first chamber 211 into the second chamber 212. The lubricating oil in the second chamber 212 will flow out from the second oil outlet 23, thereby directly lubricating the input shaft R.

[0054] Alternatively, when there is a lot of oil in the first cavity 211, the baffle assembly 3 is acted upon by the lubricating oil, and the baffle assembly 3 opens the channel between the first cavity 211 and the second cavity 212 from the bottom, so that the oil flows from the first cavity 211 into the second cavity 212. At this time, the cavity 21 is in the fourth state of communication due to the setting of the baffle assembly 3.

[0055] During rapid acceleration, the oil in the second chamber 212 accumulates to the right. At this time, because the partition assembly 3 rotates in one direction, the cavity 21 is in a separated third state, ensuring that the oil in the second chamber 212 does not flow into the first chamber 211. Simultaneously, the depth of the first chamber 211 ensures that it has sufficient oil (see reference). Figure 4 ).

[0056] In one embodiment, such as Figure 3 As shown, the partition assembly 3 includes a rotating shaft 31 and a partition plate 32. The rotating shaft 31 is fixedly connected to the housing 1, and the partition plate 32 has a through hole 321 through which the rotating shaft 31 passes. The partition plate 32 and the rotating shaft 31 are rotatably connected. Specifically, the rotating shaft 31 is located inside the cavity 21, below the baffle 4, and fixed to the inner wall of the housing 1. The partition plate 32 has a through hole 321 through which it is sleeved onto the rotating shaft 31, allowing the partition plate 32 to be rotatably connected to the rotating shaft 31. For example, under its own weight, the cavity 21 is in a separated third state (see...). Figure 2 Under external influence, the partition 32 rotates clockwise, causing the cavity 21 to be in the fourth state of lower connection.

[0057] Specifically, the partition 32 is bent. For example, the partition 32 is welded to two steel plates by a cylinder. The welded partition 32 is bent. Because the partition 32 is bent, under the action of its own weight, the partition 32 puts the cavity 21 in a third state of separation. At this time, the partition 32 abuts against the bottom surface of the inner wall of the cavity 21.

[0058] In one embodiment, such as Figure 2 and Figure 3 As shown, the partition 32 has a stop portion 322, and the oil collection box 2 has a stop portion 12. The stop portion 12 is used to limit the rotation angle of the partition 32. Specifically, the oil collection box 2 is formed with a stop portion 12, and the partition 32 has a stop portion 322. When the stop portion 322 of the partition 32 abuts against the stop portion 12, the stop portion 12 limits the partition 32.

[0059] For example, the oil collection box 2 is a curved shape with a central convexity, and the central convexity forms a stop 12. The lower part of the partition 32 forms a stop 322. Under the weight of the partition 32, the stop 322 abuts against the stop 12 from the left side, thereby preventing the partition 32 from rotating too much and causing the partition 32 to further connect the first cavity 211 and the second cavity 212 from the lower part of the partition 32.

[0060] In one embodiment, such as Figure 3As shown, the partition assembly 3 also includes a counterweight 33, which is fixed to the partition 32 so that the counterweight 33 and the partition 32 are in the third state of separating the cavity 21 under their own weight.

[0061] Specifically, the counterweight 33 is fixed to the partition 32, which lowers the center of gravity of the partition 32. Simultaneously, the counterweight 33 ensures that the partition 32 can only be "pushed open" when the oil in the first cavity 211 reaches a certain quantity. Alternatively, when the vehicle decelerates rapidly and the acceleration reaches a certain value, the oil in the first cavity 211 accumulates to the left, "pushing open" the partition 32 and allowing the oil to flow from the first cavity 211 into the second cavity 212, thereby indirectly adjusting the rotation conditions of the partition 32.

[0062] For example, both the counterweight 33 and the partition 32 are made of steel. The counterweight 33 is welded to the lower part of the partition 32. Through the action of the counterweight 33, the partition 32 and the counterweight 33 are further strengthened under their own weight, so that the partition 32 is in the third state of separating the cavity 21.

[0063] Another aspect of this application embodiment provides a vehicle including a transmission and a lubrication system, wherein the lubrication system is used to lubricate the transmission. Specifically, the lubrication system supplies oil to the transmission and lubricates the transmission. When the input shaft R rotates, the oil is agitated by the intermediate shaft Q and the differential P, causing the oil to enter the cavity 21 for collection, and then lubricate the corresponding components through the corresponding oil outlets (first oil outlet 22, second oil outlet 23).

[0064] It should be noted that, within the transmission housing 11, the baffle 4 has a first state with the connection port 213 open and a second state with the connection port 213 closed. When the differential P's rotational speed is greater than or equal to a preset value, the baffle 4 is in the second state with the connection port 213 closed, reducing the risk of oil entering the vent pipe 5 during high-speed rotation and improving the transmission's reliability. When the differential's rotational speed is less than the preset value, the baffle 4 is in the first state with the connection port 213 open, reducing the risk of oil accumulation and improving lubrication during rapid acceleration or deceleration.

[0065] To better understand the gearbox in the embodiments of this application, the details of the gearbox are described in detail below.

[0066] In the gearbox of this application embodiment, an integrated oil collection box is used, which is directly integrated into the housing 1. For example, the oil collection box is made of aluminum alloy by casting, which avoids the cost increase and strength problems caused by using plastic oil collection boxes separately.

[0067] A spring-loaded baffle 4 is installed at the upper part of the cavity 21 of the vent pipe 5. By installing the baffle 4, under non-high-speed conditions, the baffle 4 is in a retracted state due to the spring force, ensuring that oil can enter the second cavity 212 and lubricate the corresponding gears and shafts (input shaft R) through the second oil outlet 23. Under high-speed conditions, under the impact force of the oil carried by the differential P, the baffle 4 blocks the connection port 213, reducing the oil intake and preventing excessive oil in the second cavity 212, which could cause oil leakage from the vent pipe 5.

[0068] The baffle assembly 3 is located at 3 / 4 of the cavity 21, and it does not have a spring. During rapid deceleration of the vehicle, due to the acceleration, the oil in the first cavity 211 will accumulate to the left. The oil will push open the baffle assembly 3, allowing the oil to flow from the first cavity 211 into the second cavity 212, thus ensuring lubrication at the corresponding location (see reference). Figure 4 During rapid acceleration, the oil in the second chamber 212 gathers to the right. Since the baffle is unidirectional, this prevents the oil in the second chamber 212 from flowing into the first chamber 211. Simultaneously, the depth of the first chamber 211 ensures it has sufficient oil (see reference). Figure 4 ).

[0069] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed in this application.

Claims

1. A gearbox, characterized in that, include: A housing having a receiving cavity for accommodating a differential, an intermediate shaft, and at least a portion of an input shaft; An oil collection box is fixed inside the receiving cavity. The oil collection box has a cavity, a first oil outlet, a second oil outlet, and an opening. The opening, the first oil outlet, and the second oil outlet are all connected to the cavity. A partition assembly is located within the cavity, which partially divides the cavity to form a first cavity and a second cavity. The first cavity and the second cavity are connected by a connection port. The first oil outlet is located at the bottom of the first cavity, and the second oil outlet is located at the bottom of the second cavity. The first oil outlet is used for lubricating the intermediate shaft, and the second oil outlet is used for lubricating the input shaft. A baffle is located inside the cavity, and the baffle has a first state of opening the connection port and a second state of closing the connection port; When the speed of the differential is greater than or equal to a preset value, the baffle is in a second state of closing the connection port; when the speed of the differential is less than the preset value, the baffle is in a first state of opening the connection port. The partition assembly is rotatably connected to the housing, and the partition assembly has a third state in which the cavity is separated and a fourth state in which the cavity is connected; during rapid acceleration, the cavity is in the separated third state; during rapid deceleration, the cavity is in the connected fourth state.

2. The gearbox according to claim 1, characterized in that, The baffle includes: A pin is fixedly connected to the housing. A sleeve having a through hole, through which the pin passes; A baffle plate, fixedly connected to the sleeve, is used to open or close the connection port; and An elastic element connects the baffle and the pin. The elastic element is provided with a preload to keep the baffle in the open connection port.

3. The gearbox according to claim 1, characterized in that, The first oil outlet is lower than the second oil outlet; and / or, The first oil outlet is located between the second oil outlet and the opening of the oil collection box.

4. The gearbox according to claim 1, characterized in that, The barrier assembly includes: The rotating shaft is fixedly connected to the housing; and The partition has a through hole, through which the rotating shaft passes, and the partition and the rotating shaft are rotatably connected.

5. The gearbox according to claim 4, characterized in that, The partition has a stop portion, and the oil collection box has a blocking portion, which is used to limit the rotation angle of the partition.

6. The gearbox according to claim 4, characterized in that, The partition assembly further includes a counterweight block, which is fixed to the partition plate so that the counterweight block and the partition plate are in the third state of separating the cavity under their own weight.

7. The gearbox according to claim 4, characterized in that, The partition is bent.

8. The gearbox according to any one of claims 1 to 7, characterized in that, The gearbox also includes a vent pipe, which is connected to the second cavity.

9. A vehicle, characterized in that, include: The gearbox according to any one of claims 1 to 8; as well as A lubrication system for lubricating the gearbox.

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